Eduqas A-Level Psychology A290QS
Biological Approach
Psychodynamic Approach
Behaviourist Approach
Cognitive Approach
Positive Approach
Comparing the Five Approaches
Core Studies in Social and Developmental Psychology
Planning Psychological Research
Data Handling, Statistics and Mathematical Skills
Evaluating and Validating Research
Personal Investigations and Novel Research Scenarios
Addictive BehavioursAddictive
Autistic Spectrum BehavioursAutistic spectrum
Bullying BehavioursBullying
Criminal BehavioursCriminal
SchizophreniaSchizophrenia
StressStress
Controversies in Psychology
Data Handling, Statistics and Mathematical Skills
Mathematical requirements (Appendix A): Standard form and unit conversion
- 3 things to know
- Component 2
Overview
Recall questions on Standard form and unit conversion.
What you need to know
Answer each one before you reveal it.
A group's mean recall rose from 12 words to 15 words. Calculate the percentage increase.
A sample of 60 is to contain males and females in the ratio 3:2. How many of each are needed?
Questions from this subtopic
Each one with the model answer underneath.
- 1
Express 0.0032 in standard form.
Model answer
It is 3.2 × 10⁻³.
- 2
A value is recorded as 2.5 × 10⁻². Convert it to decimal form.
Model answer
It is 0.025.
- 3
A mean reaction time is given as 0.42 s. Express it in milliseconds.
Model answer
It is 420 ms.
- 4
In a sample of 300 participants, 45 met the criterion. Express this as a percentage.
Model answer
45 out of 300 is 15%.
- 5
Express 17 out of 25 as a percentage.
Model answer
It is 68%.
- 6
A group's mean recall rose from 12 words to 15 words. Calculate the percentage increase.
Model answer
The rise of 3 words on a starting value of 12 is an increase of 25%.
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